Magneto-armature.



PATENTED' MAY 21, 1905'.`

T. HUBERT.

' MAGNBTO ARMATURE.

APPLICATION FILED 00T.13,19o6.

25? JZ] l je? UNITED STATES PATENT OFFICE.

THEoDoR-E HUBERT, .oF NEW YoRK, N. Y., AssIGNoR To CHARLES E. sPLiTDoRE, or NEW YORK, N. Y.

MAGNETO-ARMATURE.

No. 's54,421.`

Specification of Letters Patent;

Patented Mayv 21, 1907.

Application filed October 13, 1906. Serial No. 338,707.

citizen of the United States, residing in New York city, borough-of Brooklyn, New York,

have invented certain new and useful.` Improvements in Magneto-Armatures, of which .the following isa specification.

My invention relates to improvements ini armatures for electric current generators, as for magnetos, andl partlcularly with respect to magnetos producing high tension fin the secondary winding, such, for instance, in the magneto disclosed in .my application. filed April 4, 1906, Serial No.'309,736,-for im rovements in electric ignition devices, w erein very high potenti-al in the secondary circuit may beproduced, Ysuch as 50,000 to 70,000

I Experiments by me have demonstrated that it is difficult to insulate the secondary Windingvofthe armature against the leakage of such high voltage, as .the current is liable toleak' or jump through .or across crevices or interstices between layers of insulating material and thereby injure the -windings .and other parts of the armature and magneto, such' as where layers of mica or other friable insulatingmaterial are superf imposed uponeach jother around the sec` 'ondary wmding. In. accordance with my 30' presentinvention, however, I amenabled to fully and permanently Ainsulate the secondary winding of the armature against'the escape of the secondary current, no matter how high the potential produced in such sec.

ondary winding, .and to this end I provide corresponding insulating members to inclose the secondar winding, which insulator members over ie the winding and have integral iianges adapted to pass along the sides of the secondary winding in the spaces between the winding and the sides of the core Y, of the armature, the inner edges of which flanges preferably rest `upon the primary windingofthe armature, the'ends of these corresponding insulating ymembers abutting or overlapping. Said insulating members 'may be in an integral piece of hard rubber or other suitable insulating material which will withstand the heat generated in the armature. The corresponding. arts of lthe secondary 4winding are prefera ly at such a distance from metallic parts of the armature that any current that might leak or jump through the joint between the adjacent meeting edges of strong insulating binder around the armai ture and itsl insulating members.

Other novel details of improvement and arrangement of parts pertaining to my in vention will be more fully hereinafter set -forth and then pointed out in the claims.

Reference is to be had to the accompany'- ing drawings forming part hereof, wherein,

Figure 1 is a side view of an armature embodying my im rovements, partly broken away substantia ly on the line 1, l, in Fig. 2, I

Fig. 2 is a side view, partly in longitudinal section on lthe broken line 2, 2, in Fig. l, looking in the direction of the arrows, Fig. 8 is an end view of Fig. 2 looking from the left,

partl broken away, Fig. 4 is an enlarged sectiona view of a portion of the armature, illus Vtrating a ortion of my improved insulating member, ig. 5 is a perspective view of one of the insulating members, Fig. Gis a detail view of one of the insulating plates or sheets between the poles of the core and the windings of the armature, Fig. 7 is a detail 'sectional view of a modified form of the insulat ing members, and Fig. 8 is a diagrammatical view of the circuits ofthe armature. l,

Similar numerals of reference indicate like parts in the several views.

The armature may generallybe of any suite able construction adapted for high tension magnetos, and in the example illustrated the core of the armature comprises a series of laminated plates 2 at opposite ends of which are metallic blocks 4, all secured together by bolts 5 passing' longitudinally theretl1rough,

as shown in Fig. l. To said,blocks 4 are secured heads 6, 7, respectively provided with s indles 6?, 7a for supporting and rotating t e ...armature The primary winding 8. Whichmay consist of any suitable number-or' layers or windings of insulated wire, having mamma insulation therebetween, such as IOO layers of paper 9, has one end connected with the core 2, as by a screw 1.0, (see l? ig. l) and the other end of the wire S is shown passing through a bore 1l. in one ot' the heads 4, which bore coin'inunicates with a hole 7h in head 7 and passes thence through a hole in insulation .13 to a metal disk 14 to which said wire is connected. The insulation 13 insulates the head 7 'from the disk 14, the parts 7, 13, and 14 heilig securely fastened together by any suitable means, as by screws, the primary circuit being wmpleted. by a brush or contact '1.5 engaging disk 1.4. and. being grounded through the l'raine of the magneto with which the spindle 6 is also grounded, any suitable 'make and break devices being provided in the primary circuit, such for instance as set l'orth in my application al'ore# said. The secondary winding 1.7 of' the armature, consisting ol" any suitable number ol layers ol insulated lline wires separated by insulation 1.8, such as paper strips, and wound upon the primary.winding 8 has one end grounded through the armature, as by being connected with Wire 8, as at 1S, and the other end oi the secondary winding is shown connected with a screw v1) secured to an insulator 20 Within spindle 7 u for engagement with a suitable detachable contact (not shown), but which. In ay be arranged as shown in 'my application aforesaid, the .insulator 2() having an integral head or `flange 20 to prevent current from leaking frdm'screw il) to the ifninatu're, and any suitable translating device or devices may be located in said circuit, such as spark plugs and distribnters, which may be arranged as set i'orth in iny said application. ri`o insulate the sides ol the windings S and i7 Vl'roni the adjacent sides or walls ol the armature l provide one or more insulating plates .Zfl bet-neen the armature Walls and the windings, which may be olI hard rubber or other suitable insulating Inaterial, such insulation being shown detached in Fig. o. To hare the. insulation 21. asintegral as possible and at the saine time apply it to the assembled. armature .l provide such insulating plates with centrally disposed opening l, l.uv to receive the core olA the a'niature and f/'lne part oli such insulating plates slit, as at 2lb, uherthyy the saine may be bent si i le wi t5, to enable the insulation to be slipped over the armature core and placed against the inner wallsjun ie armature. 'llo insulate the es at the slits 2l J of tin` .iiisulating plates i. i proven t leakage ol'currei'it therethrough, provide two or niore ol.' plaies on arrange each side oi the armature and ,their respective slits 2l out ol' register so that the integral part ol one insulating plate will regisli-.r with the slit 21 l' of the adjacent plate. This 'in-ay be readily' accomplished by inveitirniv the slits 2lb of the adjacent plates .31 with respect to eachother so that the slit i, as indicated in dotted lines in lfigj,

2.1.b ol" one plate will lie against the integral part 21 ol the adjacent plate, as shown in Fig. il, wheniby any (',n'rrent that would leali from the windings thrruigh a slit 2lh will be 'prevented l'roin reaching the 'metal ol the armature by the unslit or integral parl 21" oll the adjacent insulating plate '21..

As high tension current from the secondary yifindingd? would he liable to junip through any crevices in insulation, particularly at the outer portion oll the winding. to the metal ol the arn'niture around the edges ol' the insulating plates 2 l, and to o1 her adjacent metal olf the magneto traine, l provvide insulation in hollow or through like lorin at 25 adapted to 'lit over the winding 17 and at the sides thereol' witlnnit any break in the insulfunion at the outer corners ol' winding 17, which insulation is clearly shown in perspective .in Fig. 5. 'lhe insulating plates or caps 25 lit along the outer surface ol winding i7 and around the end portions thereof where two ot' such insulating members meet, substantially at the middle ol' the winding, and said members have integral llanges 2o extendii'ig parallel and trom end to end of the member, which flanges project along the sides ol winding 17, heilig shown disposed between said winding and the insulating plates 2l, and whereby the two through-like or hollow members 25 with their flanges 25u' wholly inclose the secondary 'winding along its outer surta-ce or periphery and at the sides thereof. 'lhe llanges 25 are ol' such depth to extend to and inel'erably engage the primary winding H, for which purpose the winding S may he made wider than the secondary winding l' providing spaces at the sides ol the winding 17 adjacent the insulating plates 2l 'to receive the flanges .3. The Amembers and their llanges 25 may be molded in an integral or homogeneous piece ol insulating inatrgirial, such. as hard rubber, or such material as will not only serve as an insulator but will withstand the hea-t generated in the windings. ily having the i'langcs 25 integral with tinl main body et the insulating member .25 so there shall he no break or crevice at the corners 2.3 the secoinflary current generated in the winding 17 is wholly conlincd within the latter, and partiijularly at the peripheryr tlnreoi' where the inost intense current exists.

The wire. ol` the sec .nulary winding 17 nuiy project between the meetingr edges 125 oi the insulating members i5, and by having the armature considerably longer than the length ol winding 1i" spaces 2.o will he pro-- vided between the heads (i, 7 and the insu lation i7 of such length as to prevent injurious action from any current that might leak. through the joint at the edges 25" ol said insulating members. After the windings are placed upon the armature the insulating members 25 will he placed over the llC lSO

' o there is no danger of the insulation becoming 3 n z:

winding 17 on opposite sides thereof, and iinto the said spaces to prevent the leakage of may be heldin place by winding silk or other current to the metal of the armature. 55 suitable material 27 around the armature 3. An armature having a winding providand over the members 25a ing spaces between the sides of the winding 5 While I have shown the members 25 and l and the sides of the armature, and insulating Y their langes 25@L on oppositev edges made in members laid peripherally upon the winding single pieces respectively, each member 25,- on opposite faces thereof and extended 6o if preferred, may be made 'in two half pork around the ends of the winding to meeting tions each provided with a flange 25a the points, said insulating members having inteio main parts being ii'tted one upon the other, `gral iianges extending from one end thereof as shown in the modification in Fig. 7, which tothe other and located in the spaces bewill be applied in position over the windings tween the sides of the winding and the arina- 65 one upon the other in obvious mannen the ture, wherebyrthe corners between the insuflanges 25' respectively.passing between the lating members and their llanges are integral i 5 sides of winding 17 and the armature, and and. unbroken to prevent the escape of curvthe insulating members being held in place rent from the winding. by the binder 27 as before mentioned. By I 4. An armature provided. with primary 7o having the insulating' members 25 adapted ,l and secondary windings providing spaces be to wholly inclose the winding 17 along its tween the sides of the armature and the ad,- zo periphery, atlits corners, and along` its sides, jacent sides of the secondary winding, and

without an i breaks o'r crevices at the corners insulating members laid over the secondary n for the leakage of current, I am enabled to winding on opposite faces thereof and ex- 75 produce a simple, relatively cheap, and yet tending unbroken around the respective` ends highly efficient, insulation for `retaining the of said winding to meeting points, said insu 25 induced currentwithin the secondary windi lating members having i1itegra.l"ila1rges exing and revent'ing the escape of the current tending from one end to the other and located to meta lic parts of. the armature and magin said spaces between the sides of-the arma- 8o neto frame, and by having such insulating ture and sides of the secondary winding. members with their flanges made integral i 5. A n insulating member for an armature winding comprising a piece of insulating material relatively ilat at its middle part and curved correspondingly at opposite ends and 8 5 provided with parallel flanges at its edges that extend unbroken from end to end of the member providing a hollow inner space to rie-v ceive an armature winding. A '6. Anarmature' comprising a series of 9o laminated'plates `provided with heads forml in'g a core, metallic blocks at opposite ends of-i detached from the armature or disintegrating, which l consider an important' improvement in this class of devices overthe customary manner of wrapping the secondary winding 35 with sheets of mica which are liable to bccome broken and displaced under the rapid rotation. toA which the armature is subjected, and wherein. when such n iica insulation becomes displaced or broken the secondary with loss of electrical eliiciency and injury.

blocks and plates securing them rigidlyto- -Ilavmg now described my invention what gether, heads secured on-the ends ofsaid 95 .l claim is blocks and provided with spindles, primary v 4o current liable to leak to the adjacent metal said plates, screws passing through said 1. An armature provided with a winding and secondary windings upon said core, and and having insulation over the winding, and insulating members located over the secondflanges integral with the insulation extending l ary winding and provided with integral between the sides of the winding andV the ilanges located between the secondary wind` noo ing and theinner sides of the armature.

sides of the armature.

rrnnononn HUBERT.

2. An armature having a winding provid- 5o ing spaces between the sides of the winding l and the sides of the arinz'tturc, and insulating Yitnesses: members laid over the winding and provided l T. F. BOURNE, with flanges integral therewith that extend L. SWINiiN. 

